Improvement in ore-crushers



J. D. WHELPLEY.

Ore Crusher.

Patented Nov. 8, 1864.

, E. adi

e e e e zfc N. PETERS, Pmmmm m, washing D4 0.

UNITED STATES PATENT OFFICE.

JAMES D. VHELPLEY, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN ORE-CRUSHERS.

Specification forming part of Letters Patent No. 44.985). dated November8, 1864.

T0 or whom it may concern:

Be it known that I, J. D. WHELPLEY, of

Boston, in the county of Suffolk and State of Massachusetts, haveinvented a new anduseful Whirlin g Table for Orushin g Copper Ores;

and I do hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the accompanying drawings, forming a part of thisspecification, in which Figure 1 is a vertical central section; Fig. 2,a top view of the whirling table and its appendages; and Fig. 3, avertical cross-section through one of the blades or cutters and thetable.

Like parts are indicated by the same letters in all the drawings.

The nature of myinvention consistsin crushing copper ores, by means of arotating circular table, H, provided with radial blades or cutters J,said table forming the bottom of a suitable vertical cylinder or hopper,and effectually preventing any particles of ore or free metal fromgetting in between the working parts of the machine, and therebyrupturing or breaking the same or producing unnecessary friction, myinvention being in this respect a great improvement over any other inuse for a similar purpose.

To enable others skilled in the art to make and use my invention, I willnow proceed to describe its construction and operation.

A is the foundation or platform of the machine.

B is a cast-iron table resting on the foundation A, and provided, asshown in Fig. l, with a circular opening in its center about one-halfthe diameter of the whirling table.

0 and D are a cylindrical box, of cast iron or other'suitable material,united by means of flanges and bolts f, as shown in Fig. l, and restingon the table B, being confined thereto by means of screws or bolts. Thecylinder D is full of perforations 6, through which the comminutedparticles of the substances broken by the whirling table are driven bycentrifugal force. The perforations 6 may be round, square, or otherwiseshaped, and of any size from one-eighth of an inch to two or more inchesin diameter, according to the size to which the substances are to bebroken.- The perforations flare outward from the inside, as representedin Fig. 1, so as notto be clogged by the particles driven through themfrom the whirling table.

F is a disk, of iron, forming a cover to the cylinder D, to which it isconfined by means of screws or bolts g, as represented in Fig. 1.

Gris the hopper, through which the materials to be broken are droppedinto the mill.

H is the circular whirling-table, about three feet in diameter, ofcast-iron, with four more or less) radial ribs, I, raised on its uppersur- 7 face in' the casting. The periphery of the table may also befurnished with an inclined flange, h, as seen in Fig. l, to assist inthrowing upward and back upon the cutters J the materials to be brokenas they are driven outward by centrifugal force. This flange h, however,may be dispensed with, the inclined surface 25 of the cylinder Gaccomplishing the same object. The flange h on the periphery of thetable H should come as near as possible, without touching, to the sidesof the cylinder 0, so that nothing of any considerable size can possiblyget between. Indeed, when the table H is in a state of rapid rotation,so strong an upward current of air is generated thereby as toeffectually prevent any small particles from ever passing down betweenthe table and the cylider.

J are the blades or cutters, of hardened steel or chilled cast-iron,shaped as clearly shown in the drawings, being securely attached to theradial ribs I by means of screws n. The ends S of the blades J arecurved, as shown in Fig. 1, to prevent the materials broken fromcrowding between them and the incline t of the cylinder 0.

K is a vertical spindle passing through the center of the table H, towhich it is fast, the bottom of the spindle resting in a suitable stepin the hanger L, which is bolted to the bottom of the table B, the upperend turning in a suitable bearing in the center of the cover F, asrepresented in Fig. 1.

M is a drum or pulley, by means of which the table H is made to revolvewith great rapidity, say, fifteen hundred times a minute.

The material to be broken, being cast into the mill through the hopperG, drops until its lowest point receives a cutting, shivering blow fromthe upper edges of the rapidly-whirling blades J, by which it isconstantly thrown forward and outward against the flange h and the sidesof the cylinder 0 D, to be thereby deflected back upon said blades untilit is broken into pieces small enough to be driven outward through theperforations 0.

My improvement is more particularly useful for breaking copper ores, inwhich the metal is free, these ores being peculiarly diflieult to reducein any other mills extant, on account of theirliability to clog andbreak or rupture the machine. My invention may, however, be obviouslyapplied to any of the purposes for Which breaking-mills are everemployed.

Having thus described the construction and operation of my invention,what I claim as new, and desire to secure by Letters Patent, is

The enipl )yment of a whirling table, II, provided with radial blades orcutters J, and forming; a bottom to the cylinder, in which it revolves,in combination with the flange It, the inclination t, and the curvatures, all constructed 'and arranged substantially as set forth.

JAMES D. WVHELPLEY.

Witnesses:

N. AMES, A. F. BADGER.

